Great Britain vs Central Intelligence Machinery

Great Britain and Central Intelligence Machinery both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
Central Intelligence Machinery	Yes	No	No	No

Great Britain (noun)	Central Intelligence Machinery (noun)
an island comprising England and Scotland and Wales	the United Kingdom's central unit for the tasking and coordination and funding of intelligence and security agencies
a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom